Finding the Fourth Proportional to 154,071.83, 212,615.12 and 86,089.37

Step by Step Solution

1. Step 1: Write the proportion equation
   154,071.83 : 212,615.12 = 86,089.37 : x
2. Step 2: Convert to fraction form
   154,071.83/212,615.12 = 86,089.37/x
3. Step 3: Cross multiply
   154,071.83x = 212,615.12 × 86,089.37
4. Step 4: Simplify right side
   154,071.83x = 18,303,900,239.75
5. Step 5: Solve for x
   x = 18,303,900,239.75/154,071.83
6. Step 6: Final answer
   x = 118,801.09